I have a flight arriving into OAK, a five hour layover in between, and then a flight departing out of SFO. I know BART would be the cheapest way to commute between the two airports. But knowing that the train routing will via certain parts of Oakland Dowtown and other sections of Oakland, I am a little worried. Worried because I have heard that Oakland is one of the highest crime rate in the Bay Area. So my question is would it generally be safe to commute on BART between OAK & SFO while the train passes by the various sections of Oakland especially during the night?